Gear Calculator?

Can someone post a few web gear calculators please? Since my browser died I've had to search for all my old Favorites. I have one calculator but not the one I like.

Thanks.

 

Here's a good calculator.

http://5speedtransmissions.com/gear_calculator.html

Brian

 

I like this calculator. It has a lot of different trannys and figures out your tire's dimensions, top speed in each gear based on rpm, etc:

http://www.1bad69.com/calc.htm

 

scroll down to bottom for tires and gears

http://www.speedworldmotorplex.com/calc.htm

 

I was at Speedworld a week ago -took my 6 yr old nephew to his first drag race.

Here's another:
http://www.ring-pinion.com/calculators/calculatorsind.html